Sewing floss holder



FIG. 1 is a front view of a sewing floss holder showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is an edge view thereof, the opposite edge view being a mirror image.

FIG. 4 is a top view thereof, and

FIG. 5 is a bottom view thereof. 

The ornamental design for a sewing floss holder, substantially as shown and described. 